Migratory birds use “weather windows” to help conserve their energy during their travels. There are plenty of tools to help you track spring bird migration. April has officially arrived, and in many ...

Add Yahoo as a preferred source to see more of our stories on Google. In the northeastern U.S., where I roost, the migrants have been trickling in for a couple of months. The Tree Swallows arrived in ...

Cornell University's BirdCast uses radar to track the massive nocturnal spring migration of birds. You can use the online dashboard to see live migration maps and how many birds flew over your county.

The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

BirdCast radar tracking has taken some of the mystery out of bird migration patterns, showing that 80% move after dark.

CHICAGO — As the calendar turns from winter to spring and the weather begins to warm in the Midwest — well, at least it’s supposed to warm — millions of birds representing hundreds of species will ...

Last night, more than 600,000 birds flew over Acadiana on their way to spring nesting sites. Before the spring migration ends in June, it's estimated that millions of birds will have flown over our ...

Coloradans are being asked to dim their lights to aid the millions of birds flying over the state each night amid the annual spring migration. Every year, birds migrate north in the spring and south ...